The thing is, Israel is going nowhere while the US supports it.
And a couple centuries ago they'd have said the Ottoman Empire is going nowhere while the UK supports it against the Czar.
I'm certain he's glad of an excuse to take more land from Jaba'. I'm not surprised that he's not considering withdrawing from areas with poor security.
I understand the politics involved. To be honest, in his shoes, I might make the same decision, but it's things like this that make me doubt that the final result a century or two from now won't be anything other than Israel being remembered as yet another failed European crusader state.
I'm not sure either of your comparisons are very apt towards the current situation @True Federalist.